Electronic volume control circuit for audio devices

Details Electronic volume control circuit for audio devices Electronic volume control circuit for audio devices

1982-11-03

1984-09-25

Mullins, James B.

Amplifiers

Variable impedance for signal channel controlled by separate...

330279, 330284, H03G 302

Patent

active

044738030

ABSTRACT:
An electronic volume for effecting a control of an impedance circuit in audio devices or the like includes a variable impedance circuit disposed in a signal transmission path and adapted to vary the impedance in accordance with an electronic control signal. A hold/through gate switchable between a hold state and a through state and adapted to permit, when taking the through state, the input signal to pass therethrough in synchronization with a clock signal of a predetermined period and, when taking the hold state, to hold and deliver the input signal as a control signal to the variable impedance circuit, is connected to a control circuit adapted to vary the input signal supplied to the hold/through gate at a predetermined rate at each time of receipt of the hold/through gate, and a rate changing means is provided for changing the rate of variation of the input signal coming through the hold/through gate.

REFERENCES:
patent: 3961281 (1976-06-01), Woolling
patent: 4238724 (1980-12-01), Klaus et al.
patent: 4280089 (1981-07-01), van de Plassche et al.
patent: 4290065 (1981-09-01), Gleason
patent: 4300108 (1981-11-01), Shuck et al.

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